If defective products ruined brands for me... I'd hate quite a few companies. You can't expect perfection every time. Fiio overall has been exceptional to me. Even after owning higher end products, I know I can go back to Fiio for affordable, yet high quality goods. I'm currently on my 3rd E17, and all three have been perfect. After owning two E5s, E7, E9, E9K, three E17s, E12, D3, D03K, only the D3 crapped out on me.
If you don't mind me asking, why is it that you're on your third E17?